36. By "a well-oiled cog in the machinery" the author intends to render the idea that man is

　　[A] a necessary part of the society though each individual’s function is negligible

　　[B] working in complete harmony with the rest of the society

　　[C] an unimportant part in comparison with the rest of the society, though functioning smoothly

　　[D] a humble component of the society, especially when working smoothly

　　37. The real cause of the anxiety of the workers and employees is that

　　[A] they are likely to lose their jobs

　　[B] they have no genuine satisfaction or interest in life

　　[C] they are faced with the fundamental realities of human existence

　　[D] they are deprtved of their individuality and independence

　　38. From the passage we can infer that real happiness of life belongs to those

　　[A] who are at the bottom of the society

　　[B] who are higher up in their social status

　　[C] who prove better than their fellow-competitors

　　[D] who could keep far away from this competitive world

　　39. To solve the present social problems the author suggests that we should

　　[A] resort to the production mode of our ancestors